CN203562487U - Polymer thin cell with double folding edges - Google Patents
Polymer thin cell with double folding edges Download PDFInfo
- Publication number
- CN203562487U CN203562487U CN201320770524.XU CN201320770524U CN203562487U CN 203562487 U CN203562487 U CN 203562487U CN 201320770524 U CN201320770524 U CN 201320770524U CN 203562487 U CN203562487 U CN 203562487U
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- CN
- China
- Prior art keywords
- double
- fold
- battery core
- polymer thin
- flanging
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a polymer thin cell with double folding edges and relates to the technical field batteries. The polymer thin cell comprises a cell body and a packing layer for wrapping the cell body. The packing layer comprises the double folding edges which include a first folding edge and a second folding edge. The cell body comprises a side wall. The first folding edge is away from the side wall. The second folding edge is close to the side wall. Due to the fact that the first folding edge of the existing double folding edges in the prior art is changed from internally folding into externally folding, the effective edge sealing width of the polymer thin cell can be increased, liquid leakage probability is lowered, the folding edge width range of the first folding edge is increased, equipment precision and staff operation requirements are lowered, and the problem that the double folding edges of the polymer thin cell are higher than the cell body can be effectively solved.
Description
Technical field
The utility model relates to battery technology field, particularly relates to a kind of polymer thin battery core with double-fold.
Background technology
Lithium ion battery is a kind of rechargeable battery, and it mainly relies on lithium ion between positive pole and negative pole, to move work.The material that general employing contains elemental lithium, as the battery of electrode, is the representative of modern high performance battery.Lithium ion generally comprises battery core and protective circuit plate, and battery core can be divided into three kinds of aluminum hull battery core, soft pack cell (claiming " polymer battery core "), cylindrical electrical cores.
Current polymer battery core aborning flanging mode has single flanging and double-fold, and the folded edges of polymer thin battery core is mainly in double-fold mode as main.
In prior art, as shown in Figure 3 and Figure 4, conventional double-fold is all that the first flanging is rolled over inward.The Chinese patent application that for example application number is 201210237239.1 discloses a kind of folded edges of soft bag lithium ionic cell, comprise the side of flexible package lithium cell and the double-fold that uses the packaging foil of the battery core of flexible package lithium cell to be converted into, between described double-fold and described side, be provided with adhesive-layer, one side and the described side of described adhesive-layer are bonding, and the opposite side of described adhesive-layer and described double-fold are bonding.The advantage of this structure is without bag side glue, itself has met the function that metal leaks outside, fixation side frontier defense stops the increase of battery core width that prevents trimming position; And more easily realize automated production than the mode of common subsides side glue.Also have the Chinese granted patent that the patent No. is ZL201120305512.0, disclose a kind of flexible packing lithium ion battery edge sealing structure.Comprise one can hold closedtop limit that two lugs pass through, two side sealings, be positioned on closedtop limit and side sealing and with battery core main body handing-over Wei Feng district; On described closedtop limit, be provided with and turn up axle, closedtop edge is turned up and is axially above bent rear and horizontal plane formation angle α, two lugs along with the handing-over alignment on closedtop limit under after bending with closedtop limit formation angle β, 0 ° of < α≤90 ° and α and β sum are 180 °.Compared with prior art, the utlity model has larger volume energy ratio, sealing effectiveness is good simultaneously.
Above technology shows, the customary means of prior art is all that the first flanging is rolled over inward, its drawback is: the width of the first flanging can not be oversize can not be too short, it is larger that the width size of the first flanging is controlled difficulty, also limited effective edge sealing width of battery core main body simultaneously, easily there is leakage and also higher to personnel's operation and equipment precision requirement, if the width of the first flanging is oversize simultaneously, the first flanging easily opens folding and does not go up, cause battery core body width wider, if the first flanging is too short, easily occur that folded edges exceeds battery core main body situation.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of polymer thin battery core with double-fold is provided, this polymer thin battery core with double-fold can increase the effective edge sealing width of polymer thin battery core, reduce the probability of leakage, also strengthened in addition the flanging width range of the first flanging, the requirement of reduction to equipment precision and personnel's operation, the double-fold that can also effectively solve polymer thin battery core exceeds the problem of battery core main body.
The purpose of this utility model is achieved through the following technical solutions:
A kind of polymer thin battery core with double-fold is provided, polymer thin battery core comprises battery core main body and for wrapping up the wrapper of battery core main body, wrapper comprises closedtop limit and two side sealings, side sealing is set to double-fold, double-fold comprises the first flanging and the second flanging, and battery core main body comprises sidewall, in the utility model, first fold is outlying from sidewall, and the second flanging is near sidewall.
Preferably, the length of the first flanging is no more than the length of the second flanging.
Wherein, wrapper is aluminium foil.
Wherein, closedtop limit is connected with two lugs.
Wherein, it is parallel to each other that double-fold is U font and the first flanging and the second flanging.
Wherein, the angle a between double-fold and wrapper is less than 90 degree.
The beneficial effects of the utility model: the utility model by by the first fold of the double-fold of prior art for to change outside folding into infolding, can increase the effective edge sealing width of polymer thin battery core, reduce the probability of leakage, also strengthened in addition the flanging width range of the first flanging, the requirement of reduction to equipment precision and personnel's operation, the double-fold that can also effectively solve polymer thin battery core exceeds the problem of battery core main body.
Accompanying drawing explanation
Utilize accompanying drawing to be described further utility model, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is a schematic diagram of the polymer thin battery core with double-fold of the present utility model.
Fig. 2 is another schematic diagram of the polymer thin battery core with double-fold of the present utility model.
Fig. 3 is a schematic diagram of the polymer thin battery core with double-fold of prior art.
Fig. 4 is another schematic diagram of the polymer thin battery core with double-fold of prior art.
In figure, include:
1---battery core main body, 11---sidewall;
2---the first flanging;
3---the second flanging;
4---closedtop limit;
5---lug.
Embodiment
With the following Examples the utility model is further described.
A kind of polymer thin battery core with double-fold of the present embodiment, as illustrated in fig. 1 and 2, it comprises battery core main body 1 and for wrapping up the wrapper of battery core main body 1, wrapper comprises double-fold, double-fold comprises the first flanging 2 and the second flanging 3, and battery core main body comprises sidewall 11, in the present embodiment, first fold outlying from sidewall 11, the second flangings near sidewall 11.
Comparatively preferred, the length of the first flanging 2 is no more than the length of the second flanging 3.Can improve edge sealing effect, reduce edge sealing difficulty.
Wherein, wrapper is aluminium foil.Aluminium foil can prevent better battery core body corrosion and with extraneous short circuit, have 1, a high barrier; 2, good cold stamping shaped property; 3, paracentesis resistance; 4, electrolyte resistance stability; 5, electrical property better (comprising insulating properties).
Wherein, closedtop limit is connected with two lugs.The quantity of lug can arrange according to actual needs.
Wherein, it is parallel to each other that double-fold is U font and the first flanging and the second flanging.The double-fold of this structure is more saved the space of double-fold.
Wherein, the angle a between double-fold and wrapper is less than 90 degree.Double-fold is not easy to open.
The present embodiment by by the first fold of the double-fold of prior art for to change outside folding into infolding, can increase the effective edge sealing width of polymer thin battery core, reduce the probability of leakage, also strengthened in addition the flanging width range of the first flanging 2, the requirement of reduction to equipment precision and personnel's operation, the double-fold that can also effectively solve polymer thin battery core exceeds the problem of battery core main body 1.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection range; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. one kind has the polymer thin battery core of double-fold, comprise battery core main body and for wrapping up the wrapper of battery core main body, wrapper comprises closedtop limit and two side sealings, side sealing is set to double-fold, double-fold comprises the first flanging and the second flanging, battery core main body comprises sidewall, it is characterized in that: the first flanging is arranged at away from sidewall, and the second flanging is arranged near sidewall.
2. a kind of polymer thin battery core with double-fold as claimed in claim 1, is characterized in that: the length of the first flanging is no more than the length of the second flanging.
3. a kind of polymer thin battery core with double-fold as claimed in claim 1, is characterized in that: wrapper is aluminium foil.
4. a kind of polymer thin battery core with double-fold as claimed in claim 1, is characterized in that: closedtop limit is connected with two lugs.
5. a kind of polymer thin battery core with double-fold as claimed in claim 1, is characterized in that: it is parallel to each other that double-fold is U font and the first flanging and the second flanging.
6. a kind of polymer thin battery core with double-fold as claimed in claim 1, is characterized in that: the angle a between double-fold and wrapper is less than 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320770524.XU CN203562487U (en) | 2013-11-30 | 2013-11-30 | Polymer thin cell with double folding edges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320770524.XU CN203562487U (en) | 2013-11-30 | 2013-11-30 | Polymer thin cell with double folding edges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203562487U true CN203562487U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320770524.XU Expired - Fee Related CN203562487U (en) | 2013-11-30 | 2013-11-30 | Polymer thin cell with double folding edges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203562487U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356565A (en) * | 2016-10-13 | 2017-01-25 | 安徽巨大电池技术有限公司 | Lithium battery pack |
| WO2018049575A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Flexible-packaged battery shell |
| WO2018049577A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Secondary battery |
| CN112086585A (en) * | 2019-06-14 | 2020-12-15 | 东莞新能德科技有限公司 | Battery with a battery cell |
| CN113744273A (en) * | 2021-11-08 | 2021-12-03 | 武汉逸飞激光股份有限公司 | Soft package battery cell edge folding detection method and device, electronic equipment and storage medium |
-
2013
- 2013-11-30 CN CN201320770524.XU patent/CN203562487U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018049575A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Flexible-packaged battery shell |
| WO2018049577A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Secondary battery |
| CN106356565A (en) * | 2016-10-13 | 2017-01-25 | 安徽巨大电池技术有限公司 | Lithium battery pack |
| CN106356565B (en) * | 2016-10-13 | 2019-09-20 | 安徽巨大电池技术有限公司 | Lithium battery pack |
| CN112086585A (en) * | 2019-06-14 | 2020-12-15 | 东莞新能德科技有限公司 | Battery with a battery cell |
| CN112086585B (en) * | 2019-06-14 | 2023-09-26 | 东莞新能德科技有限公司 | Battery cell |
| CN113744273A (en) * | 2021-11-08 | 2021-12-03 | 武汉逸飞激光股份有限公司 | Soft package battery cell edge folding detection method and device, electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20181130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |